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Linux Analysis Report
root.elf

Overview

General Information

Sample name:root.elf
Analysis ID:1584872
MD5:112fd5df373a003237876e96ec87c9fe
SHA1:624c22d4e5fc1dc20c380b562a4b9f9b0befedf0
SHA256:b6d9439fa186ae21173e57bad9cd893b6a27d5ca4382b00312249cefa40932d7
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:72
Range:0 - 100
Whitelisted:false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Machine Learning detection for sample
Opens /proc/net/* files useful for finding connected devices and routers
Detected TCP or UDP traffic on non-standard ports
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Yara signature match

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1584872
Start date and time:2025-01-06 16:57:08 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 49s
Hypervisor based Inspection enabled:false
Report type:full
Cookbook file name:defaultlinuxfilecookbook.jbs
Analysis system description:Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:default
Sample name:root.elf
Detection:MAL
Classification:mal72.spre.troj.linELF@0/0@2/0
  • VT rate limit hit for: root.elf
Command:/tmp/root.elf
PID:5439
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • root.elf (PID: 5439, Parent: 5365, MD5: 112fd5df373a003237876e96ec87c9fe) Arguments: /tmp/root.elf
    • root.elf New Fork (PID: 5440, Parent: 5439)
      • root.elf New Fork (PID: 5441, Parent: 5440)
  • cleanup
NameDescriptionAttributionBlogpost URLsLink
MiraiMirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.No Attributionhttps://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai
SourceRuleDescriptionAuthorStrings
root.elfLinux_Trojan_Gafgyt_9c18716cunknownunknown
  • 0x17d5:$a: FC 80 F6 FE 59 21 EC 75 10 26 CF DC 7B 5A 5B 4D 24 C9 C0 F3
SourceRuleDescriptionAuthorStrings
5440.1.0000000008048000.0000000008055000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
    5440.1.0000000008048000.0000000008055000.r-x.sdmpLinux_Trojan_Mirai_389ee3e9unknownunknown
    • 0x7722:$a: 89 45 00 EB 2C 8B 4B 04 8B 13 8B 7B 18 8B 01 01 02 8B 02 83
    5440.1.0000000008048000.0000000008055000.r-x.sdmpLinux_Trojan_Mirai_cc93863bunknownunknown
    • 0x60a1:$a: C3 57 8B 44 24 0C 8B 4C 24 10 8B 7C 24 08 F3 AA 8B 44 24 08
    5439.1.0000000008048000.0000000008055000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
      5439.1.0000000008048000.0000000008055000.r-x.sdmpLinux_Trojan_Mirai_389ee3e9unknownunknown
      • 0x7722:$a: 89 45 00 EB 2C 8B 4B 04 8B 13 8B 7B 18 8B 01 01 02 8B 02 83
      Click to see the 1 entries
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: root.elfReversingLabs: Detection: 39%
      Source: root.elfJoe Sandbox ML: detected

      Spreading

      barindex
      Source: /tmp/root.elf (PID: 5439)Opens: /proc/net/routeJump to behavior
      Source: global trafficTCP traffic: 192.168.2.13:39242 -> 94.156.227.153:6969
      Source: unknownTCP traffic detected without corresponding DNS query: 94.156.227.153
      Source: unknownTCP traffic detected without corresponding DNS query: 94.156.227.153
      Source: unknownTCP traffic detected without corresponding DNS query: 94.156.227.153
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com

      System Summary

      barindex
      Source: root.elf, type: SAMPLEMatched rule: Linux_Trojan_Gafgyt_9c18716c Author: unknown
      Source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_389ee3e9 Author: unknown
      Source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
      Source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_389ee3e9 Author: unknown
      Source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
      Source: LOAD without section mappingsProgram segment: 0x8048000
      Source: root.elf, type: SAMPLEMatched rule: Linux_Trojan_Gafgyt_9c18716c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 351772d2936ec1a14ee7e2f2b79a8fde62d02097ae6a5304c67e00ad1b11085a, id = 9c18716c-e5cd-4b4f-98e2-0daed77f34cd, last_modified = 2021-09-16
      Source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_389ee3e9 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 59f2359dc1f41d385d639d157b4cd9fc73d76d8abb7cc09d47632bb4c9a39e6e, id = 389ee3e9-70c1-4c93-a999-292cf6ff1652, last_modified = 2022-01-26
      Source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
      Source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_389ee3e9 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 59f2359dc1f41d385d639d157b4cd9fc73d76d8abb7cc09d47632bb4c9a39e6e, id = 389ee3e9-70c1-4c93-a999-292cf6ff1652, last_modified = 2022-01-26
      Source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
      Source: classification engineClassification label: mal72.spre.troj.linELF@0/0@2/0
      Source: root.elfSubmission file: segment LOAD with 7.9403 entropy (max. 8.0)

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: 5440.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: 5439.1.0000000008048000.0000000008055000.r-x.sdmp, type: MEMORY
      ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
      Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
      Obfuscated Files or Information
      OS Credential Dumping1
      Remote System Discovery
      Remote ServicesData from Local System1
      Non-Standard Port
      Exfiltration Over Other Network MediumAbuse Accessibility Features
      CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsRootkitLSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
      Non-Application Layer Protocol
      Exfiltration Over BluetoothNetwork Denial of Service
      Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared Drive1
      Application Layer Protocol
      Automated ExfiltrationData Encrypted for Impact
      No configs have been found
      Hide Legend

      Legend:

      • Process
      • Signature
      • Created File
      • DNS/IP Info
      • Is Dropped
      • Number of created Files
      • Is malicious
      • Internet
      SourceDetectionScannerLabelLink
      root.elf39%ReversingLabsLinux.Packed.Mirai
      root.elf100%Joe Sandbox ML
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches
      NameIPActiveMaliciousAntivirus DetectionReputation
      daisy.ubuntu.com
      162.213.35.24
      truefalse
        high
        • No. of IPs < 25%
        • 25% < No. of IPs < 50%
        • 50% < No. of IPs < 75%
        • 75% < No. of IPs
        IPDomainCountryFlagASNASN NameMalicious
        94.156.227.153
        unknownBulgaria
        57463NETIXBGfalse
        MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
        94.156.227.15394.156.227.153-x86-2025-01-06T15_02_30.elfGet hashmaliciousMiraiBrowse
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          daisy.ubuntu.comarm6.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.24
          94.156.227.153-x86-2025-01-06T15_02_30.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          94.156.227.153-mips-2025-01-06T15_02_30.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.24
          94.156.227.153-arm-2025-01-06T14_32_11.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.25
          hidakibest.arm5.elfGet hashmaliciousGafgyt, MiraiBrowse
          • 162.213.35.24
          hidakibest.mips.elfGet hashmaliciousGafgyt, MiraiBrowse
          • 162.213.35.25
          hidakibest.arm6.elfGet hashmaliciousGafgyt, MiraiBrowse
          • 162.213.35.25
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          • 162.213.35.25
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          • 162.213.35.25
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          • 162.213.35.25
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          NETIXBG94.156.227.153-x86-2025-01-06T15_02_30.elfGet hashmaliciousMiraiBrowse
          • 94.156.227.153
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          • 94.156.227.234
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          • 94.156.227.234
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          • 94.156.227.234
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          • 94.156.227.234
          No context
          No context
          No created / dropped files found
          File type:ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, no section header
          Entropy (8bit):7.937362132296058
          TrID:
          • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
          • ELF Executable and Linkable format (generic) (4004/1) 49.84%
          File name:root.elf
          File size:29'616 bytes
          MD5:112fd5df373a003237876e96ec87c9fe
          SHA1:624c22d4e5fc1dc20c380b562a4b9f9b0befedf0
          SHA256:b6d9439fa186ae21173e57bad9cd893b6a27d5ca4382b00312249cefa40932d7
          SHA512:c05aed1767d51ac5147fd9987cb8fb19c401f6c463bf3fb5e1c667870077c45eeac567ce0192814a0ba9e36f50c5f3fccf8183023b6ea57fee220c70ca7dadeb
          SSDEEP:768:nd78ykw0V0TyBftFGLDGLgUVGfVDZbxwEnbcuyD7Uryqc:d7RLSDftELKVMhZ1wEnouy8mqc
          TLSH:D2D2E1B3D083AE9FC59700B30CDF346F4A28D72C5441696AAA99717DCDA7B60312E913
          File Content Preview:.ELF........................4...........4. ...(......................r...r..........................................Q.td.............................4.IYTS.....................T..........?..k.I/.j....\.d*nlz.f..:X/:..5.KT7S..Rh...v..Gyb\j.UU..nn?.4H.:..'.

          ELF header

          Class:ELF32
          Data:2's complement, little endian
          Version:1 (current)
          Machine:Intel 80386
          Version Number:0x1
          Type:EXEC (Executable file)
          OS/ABI:UNIX - Linux
          ABI Version:0
          Entry Point Address:0x804e0c8
          Flags:0x0
          ELF Header Size:52
          Program Header Offset:52
          Program Header Size:32
          Number of Program Headers:3
          Section Header Offset:0
          Section Header Size:40
          Number of Section Headers:0
          Header String Table Index:0
          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
          LOAD0x00x80480000x80480000x72bc0x72bc7.94030x5R E0x1000
          LOAD0x00x80500000x80500000x00xb9a40.00000x6RW 0x1000
          GNU_STACK0x00x00x00x00x00.00000x6RW 0x4
          TimestampSource PortDest PortSource IPDest IP
          Jan 6, 2025 16:57:53.889043093 CET392426969192.168.2.1394.156.227.153
          Jan 6, 2025 16:57:53.893996000 CET69693924294.156.227.153192.168.2.13
          Jan 6, 2025 16:57:53.894155979 CET392426969192.168.2.1394.156.227.153
          Jan 6, 2025 16:57:53.894155979 CET392426969192.168.2.1394.156.227.153
          Jan 6, 2025 16:57:53.898950100 CET69693924294.156.227.153192.168.2.13
          TimestampSource PortDest PortSource IPDest IP
          Jan 6, 2025 17:00:40.111187935 CET4945353192.168.2.131.1.1.1
          Jan 6, 2025 17:00:40.111247063 CET3503853192.168.2.131.1.1.1
          Jan 6, 2025 17:00:40.117891073 CET53494531.1.1.1192.168.2.13
          Jan 6, 2025 17:00:40.117911100 CET53350381.1.1.1192.168.2.13
          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
          Jan 6, 2025 17:00:40.111187935 CET192.168.2.131.1.1.10x5d76Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
          Jan 6, 2025 17:00:40.111247063 CET192.168.2.131.1.1.10x2092Standard query (0)daisy.ubuntu.com28IN (0x0001)false
          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
          Jan 6, 2025 17:00:40.117891073 CET1.1.1.1192.168.2.130x5d76No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
          Jan 6, 2025 17:00:40.117891073 CET1.1.1.1192.168.2.130x5d76No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

          System Behavior

          Start time (UTC):15:57:53
          Start date (UTC):06/01/2025
          Path:/tmp/root.elf
          Arguments:/tmp/root.elf
          File size:29616 bytes
          MD5 hash:112fd5df373a003237876e96ec87c9fe

          Start time (UTC):15:57:53
          Start date (UTC):06/01/2025
          Path:/tmp/root.elf
          Arguments:-
          File size:29616 bytes
          MD5 hash:112fd5df373a003237876e96ec87c9fe

          Start time (UTC):15:57:53
          Start date (UTC):06/01/2025
          Path:/tmp/root.elf
          Arguments:-
          File size:29616 bytes
          MD5 hash:112fd5df373a003237876e96ec87c9fe